CN114220686B - Key structure and wearable equipment - Google Patents
Key structure and wearable equipment Download PDFInfo
- Publication number
- CN114220686B CN114220686B CN202111530657.5A CN202111530657A CN114220686B CN 114220686 B CN114220686 B CN 114220686B CN 202111530657 A CN202111530657 A CN 202111530657A CN 114220686 B CN114220686 B CN 114220686B
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- Prior art keywords
- key
- cavity
- sealing
- chamber
- fluid
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- 238000007789 sealing Methods 0.000 claims abstract description 130
- 239000012530 fluid Substances 0.000 claims abstract description 102
- 230000001105 regulatory effect Effects 0.000 claims abstract description 36
- 230000000149 penetrating effect Effects 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims description 37
- 238000010521 absorption reaction Methods 0.000 claims description 34
- 239000007788 liquid Substances 0.000 claims description 21
- 239000002250 absorbent Substances 0.000 claims description 17
- 230000002745 absorbent Effects 0.000 claims description 17
- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 210000001503 joint Anatomy 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 230000002093 peripheral effect Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 230000008602 contraction Effects 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- -1 but not limited to Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009182 swimming Effects 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/04—Cases; Covers
- H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/163—Wearable computers, e.g. on a belt
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Electric Clocks (AREA)
Abstract
The invention relates to the technical field of intelligent wearing equipment, and discloses a key structure and wearable equipment, wherein the wearable equipment is provided with a key hole; the key is movably arranged in the shaft hole in a penetrating way; the piston is movably arranged in the pressure regulating cavity and divides the pressure regulating cavity into a first cavity communicated with the outside and a second cavity communicated with the shaft hole, and the second cavity is filled with fluid; when the piston moves in the pressure regulating cavity, the space of one of the first chamber and the second chamber is contracted, and the space of the other of the first chamber and the second chamber is expanded; the sealing assembly comprises a first sealing element and a second sealing element which are sleeved on the keys at intervals, and the first sealing element and the second sealing element are enclosed with the inner wall of the shaft hole and the outer wall of the keys to form a fluid cavity communicated with the second cavity. The waterproof seal of the key structure provided by the invention is more reliable.
Description
Technical Field
The invention relates to the technical field of intelligent wearable equipment, in particular to a key structure and wearable equipment.
Background
At present, intelligent wearing equipment such as intelligent watch and intelligent bracelet are provided with function keys, corresponding function selection and switching are realized through pressing and rotating the function keys, and meanwhile, in order to meet the waterproof function of the intelligent wearing equipment, the function keys are correspondingly sealed and waterproof.
In the related art, the function button periphery cover is equipped with the installation cover, sets up the sealing washer between the interior perisporium of function button and installation cover to prevent that moisture in the external environment from getting into intelligent wearing equipment through the clearance between function button and the installation cover perisporium. When moisture in the external environment gets into in the clearance between button and the installation cover, the outside surface contact of water liquid and sealing washer extrudees the sealing washer, and the inside surface of sealing washer does not contact with water liquid, and the pressure that so the outside surface of sealing washer received is atmospheric pressure and the sum of water hydraulic pressure, and the pressure that the inside surface of sealing washer received is atmospheric pressure, and the pressure unbalance that so the inside surface of sealing washer and outside surface received, and the pressure that the outside surface of sealing washer received will be greater than the pressure that the inside surface of sealing washer received, so water liquid flows to the inside surface of sealing washer easily and leads to sealing washer sealed inefficacy.
Disclosure of Invention
The invention mainly aims to provide a key structure, which aims to improve the reliability of waterproof sealing of the key structure.
In order to achieve the above object, the present invention provides a key structure applied to a wearable device, the wearable device being provided with a key hole, the key structure comprising:
the mounting sleeve part is penetrated in the key hole and is provided with a shaft hole and a pressure regulating cavity;
the key is movably arranged in the shaft hole in a penetrating way;
the piston is movably arranged in the pressure regulating cavity and divides the pressure regulating cavity into a first cavity communicated with the outside and a second cavity communicated with the shaft hole, and the second cavity is filled with fluid; when the piston moves in the pressure regulating cavity, the space of one of the first cavity and the second cavity is contracted, and the space of the other of the first cavity and the second cavity is expanded; and
The sealing assembly comprises a first sealing element and a second sealing element which are sleeved on the key at intervals, and the first sealing element and the second sealing element are enclosed with the inner wall of the shaft hole and the outer wall of the key to form a fluid cavity communicated with the second cavity.
In an embodiment of the invention, the key structure further includes an elastic member;
the elastic piece is arranged in the first cavity and is abutted with the piston; the elastic member is in a compressed state to drive the piston to compress the space of the second chamber.
In one embodiment of the present invention, a guiding groove is formed in the inner wall of the first chamber, and the elastic member is accommodated and limited in the guiding groove;
and/or the piston is provided with a limiting groove, and part of the structure of the elastic piece is accommodated in and limited in the limiting groove.
In one embodiment of the invention, the second chamber includes an expanding section and a contracting section in communication, the contracting section in communication with the fluid chamber, the piston being located between the first chamber and the expanding section.
In one embodiment of the invention, the mounting sleeve is provided with an injection hole communicated with the second chamber;
the key structure further comprises a sealing plug, wherein the sealing plug is inserted into the injection hole and seals the injection hole.
In an embodiment of the invention, a sealing groove is formed by enclosing the outer wall of the piston and the inner wall of the pressure regulating cavity;
the key structure further comprises a third sealing piece arranged in the sealing groove, and the third sealing piece is in butt joint with the outer wall of the piston and the inner wall of the pressure regulating cavity.
In one embodiment of the invention, the second seal comprises a sealing layer and a first absorbent layer;
the sealing layer is positioned between the absorption layer and the first sealing piece and is enclosed with the outer wall of the key and the inner wall of the shaft hole to form the fluid cavity; the first absorbent layer is configured to absorb a portion of the fluid.
In an embodiment of the invention, the second seal further comprises a second absorbent layer;
the second absorption layer is positioned on one side of the first absorption layer, which is away from the sealing layer, and the absorption rate of the second absorption layer to the fluid is smaller than that of the first absorption layer to the fluid.
In addition, the invention also provides a wearable device, which comprises:
the shell is provided with an installation cavity and a key hole communicated with the installation cavity; and
above-mentioned button structure, the installation cover of button structure is located in the installation cavity, the partial structure of installation cover wears to locate in the button hole.
In an embodiment of the present invention, the housing is provided with a liquid inlet hole, and the liquid inlet hole communicates with the outside and the first chamber of the key structure;
the key comprises a key shaft and a key cap, the key shaft is movably arranged in the shaft hole of the mounting sleeve in a penetrating mode, and the key cap is connected with the key shaft and is positioned on the outer side of the shell; the orthographic projection of the keycap on the shell shields the liquid inlet.
According to the technical scheme, the first sealing piece and the second sealing piece are sleeved on the key cover at intervals, so that the first sealing piece and the second sealing piece are enclosed with the outer wall of the key and the inner wall of the shaft hole to form a fluid cavity, and the fluid cavity is communicated with the second cavity of the pressure regulating cavity. Therefore, when external moisture enters a gap between the outer wall of the key and the inner wall of the shaft hole, the external moisture also enters the first cavity communicated with the outside, and the moisture entering the gap between the outer wall of the key and the inner wall of the shaft hole presses the outer side surface of the first sealing element. The moisture in the first chamber will cause the extrusion to the piston, make the piston remove in the pressure regulating intracavity, and make the space expansion in the first chamber, the space contraction in the second chamber, thereby the fluid in the second chamber will flow into the fluid intracavity under the piston promotes, and extrude the inboard surface of first sealing member, so the outside surface and the inboard surface of first sealing member receive respectively from external moisture and the extrusion of fluid, the pressure that the outside surface of first sealing member and inboard surface received all mainly atmospheric pressure and external moisture's pressure, the outside surface of first sealing member and the pressure that inboard surface received are balanced relatively, be difficult for leading to sealing failure because the pressure unbalance that the inside and outside surface received of first sealing member, the reliability of this button structure waterproof seal has been promoted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an exemplary wearable device of the present invention;
fig. 2 is a side view of the wearable device of fig. 1;
FIG. 3 is a cross-sectional view of the wearable device of FIG. 2 along line A-A';
fig. 4 is an enlarged view of the key structure in the B part of fig. 3.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 1 | Mounting sleeve | 41 | First sealing member |
| 1a | Shaft hole | 42 | Second sealing member |
| 1b | Pressure regulating cavity | 421 | Sealing layer |
| 1b1 | First chamber | 422 | First absorbent layer |
| 1b2 | A second chamber | 423 | Second absorbent layer |
| 1b21 | Expansion section | 43 | Third seal member |
| 1b22 | Shrink section | 5 | Elastic piece |
| 1c | Guide groove | 6 | Sealing plug |
| 1d | Injection hole | a | Fluid chamber |
| 2 | Key-press | 7 | Outer casing |
| 21 | Key shaft | 7a | Mounting cavity |
| 22 | Key cap | 7b | Button hole |
| 3 | Piston | 7c | Liquid inlet |
| 3a | Limiting groove | 8 | First sensor |
| 3b | Sealing groove | 9 | Second sensor |
| 4 | Seal assembly |
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
In the present invention, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. The meaning of "and/or", "and/or" as used throughout is intended to include three side-by-side schemes, for example "a and/or B", including a scheme, or B scheme, or a scheme where a and B meet at the same time. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
The invention provides a key structure, which is applied to wearable equipment such as intelligent watches, and the wearable equipment is provided with a shell 7, wherein the shell 7 is provided with a key hole 7b, and the key structure is movably arranged in the key hole 7b in a penetrating way.
In an embodiment of the present invention, as shown in fig. 3 and 4, the key structure includes a mounting sleeve 1, a key 2, a piston 3 and a sealing component 4, wherein a part of the mounting sleeve 1 is penetrated in a key hole 7b, and the mounting sleeve 1 is provided with a shaft hole 1a and a pressure regulating cavity 1b; the key 2 is movably arranged in the shaft hole 1a in a penetrating way; the piston 3 is movably arranged in the pressure regulating cavity 1b, and divides the pressure regulating cavity 1b into a first cavity 1b1 communicated with the outside and a second cavity 1b2 communicated with the shaft hole 1a, and the second cavity 1b2 is filled with fluid; when the piston 3 moves in the pressure regulating cavity 1b, the space of one of the first cavity 1b1 and the second cavity 1b2 is contracted, and the space of the other of the two cavities is expanded; the sealing assembly 4 comprises a first sealing element 41 and a second sealing element 42 which are sleeved on the key 2 at intervals, and the first sealing element 41 and the second sealing element 42 are enclosed with the inner wall of the shaft hole 1a and the outer wall of the key 2 to form a fluid cavity a communicated with the second cavity 1b 2.
In this embodiment, the key hole 7b is used for installing the installation sleeve 1, a part of the installation sleeve 1 is accommodated in and limited by the key hole 7b, the rest part of the installation sleeve 1 is accommodated in an installation cavity 7a formed by enclosing the casing 7, and the installation sleeve 1 can be connected and fixed with the casing 7 in a clamping, screwing and other manners. The installation sleeve 1 is provided with a shaft hole 1a along the axial direction of the key hole 7b, and the shaft hole 1a is communicated with an installation cavity 7a for installing a functional module of the wearable device in the shell 7. The key 2 passes through the shaft hole 1a of the installation sleeve 1 and can be detected by a sensor group in the installation cavity 7a when rotating or moving along the axial direction of the shaft hole 1a, and the wearable equipment can respond to the operation of the key 2 through a functional module electrically connected with the sensor group, so that the display, the loudspeaker and the like are further controlled to execute actions such as picture display, sounding and the like correspondingly by the execution terminal, and information interaction between the wearable equipment and a user is realized. The installation sleeve 1 is provided with a pressure regulating cavity 1b communicated with the shaft hole 1a at one side of the shaft hole 1a, the side wall of the shaft hole 1a can be provided with an opening communicated with the pressure regulating cavity 1b, and the shaft hole 1a and the pressure regulating cavity 1b are communicated through the opening. The pressure regulating chamber 1b may be formed in the mounting sleeve 1, or the pressure regulating chamber 1b may be formed by enclosing part of the chamber wall of the mounting sleeve 1 and the mounting chamber 7 a.
The piston 3 is movably arranged in the pressure regulating cavity 1b, the outer peripheral wall of the piston 3 is in sliding contact with the inner peripheral wall of the pressure regulating cavity 1b, the pressure regulating cavity 1b is divided into a first cavity 1b1 and a second cavity 1b2 which are not communicated with each other, and the cavity wall and the shell 7 of the first cavity 1b1 can be provided with an opening communicated with the first cavity 1b1 so that the first cavity 1b1 is communicated with the outside. The second chamber 1b2 extends toward the shaft hole 1a, and communicates with the shaft hole 1 a. The second chamber 1b2 is filled with a fluid, which may completely fill the space in the second chamber 1b2 or partially fill the space in the second chamber 1b 2. The fluid may be a gas including, but not limited to, inert gases and other gases that are chemically inert, and a liquid including, but not limited to, liquids in the oil, in the gel, or in the molten state. When the key 2 has a conductive function, for example, for implementing an electrocardiographic detection function, the fluid also needs to have an insulating property so as to avoid electric leakage of the key 2 by contact and conduction of the fluid with the housing 7. Optionally, the fluid in this embodiment is an oil material with insulation and lubrication effects, such as synthetic insulating oil, so that on one hand, the above-mentioned requirement for insulation between the key 2 and the housing can be met; on the other hand, the smoothness of the key 2 during pressing and rotating can be improved through insulating lubricating oil in the fluid cavity a, and the problem that the key 2 is easy to block during rotating and pressing is solved.
The first sealing member 41 and the second sealing member 42 are used for waterproof sealing between the key 2 and the shaft hole 1a, meanwhile, a fluid cavity a is formed between the first sealing member 41 and the second sealing member 42, the fluid cavity a is a part of a space of a gap formed between the outer wall of the key 2 and the inner wall of the shaft hole 1a, an opening communicated with the second chamber 1b2 is formed in the side wall of the fluid cavity a, when the space of the second chamber 1b2 is compressed by the piston 3, fluid in the second chamber 1b2 can flow into the closed fluid cavity a, and pressure is applied to the inner side surface of the first sealing member 41 to resist the pressure of immersed external moisture on the outer side surface of the first sealing member 41, so that the inner side surface and the outer side surface of the first sealing member 41 are balanced in stress. The provision of the second seal member 42 prevents the fluid entering the fluid chamber a from entering the installation chamber 7a, prevents the fluid from affecting the normal operation of the functional module in the installation chamber 7a, and also prevents the fluid in the second chamber 1b2 and the fluid chamber a from escaping, so that the pressure cannot be continuously and stably applied to the first seal member 41. The first sealing member 41 and the second sealing member 42 may be rubber or silicone sealing rings, etc., and are not limited herein.
When the key structure is used, if external moisture enters a gap between the outer wall of the key 2 and the inner wall of the shaft hole 1a, the external moisture also enters the first cavity 1b1 communicated with the outside, and the moisture entering the gap between the outer wall of the key 2 and the inner wall of the shaft hole 1a presses the outer side surface of the first sealing member 41. Moisture entering the first chamber 1b1 will squeeze the piston 3, so that the piston 3 moves in the pressure regulating cavity 1b, and the space in the first chamber 1b1 expands, and the space in the second chamber 1b2 contracts, so that fluid in the second chamber 1b2 will flow into the fluid cavity a under the pushing of the piston 3, and squeeze the inner side surface of the first sealing member 41, so that the outer side surface and the inner side surface of the first sealing member 41 are respectively squeezed by moisture from the outside and fluid, the pressure suffered by the outer side surface and the inner side surface of the first sealing member 41 are mainly atmospheric pressure and the pressure suffered by the outside moisture, the pressure suffered by the outer side surface and the inner side surface of the first sealing member 41 are relatively balanced, and sealing failure is not easy to be caused due to unbalanced pressure suffered by the inner side surface and the outer side surface of the first sealing member 41, so that the reliability of the waterproof sealing of the key structure is improved.
In an embodiment of the present invention, as shown in fig. 3 and 4, the key structure further includes an elastic member 5; the elastic piece 5 is arranged in the first chamber 1b1 and is abutted against the piston 3; the elastic member 5 is in a compressed state to drive the piston 3 to compress the space of the second chamber 1b 2.
In this embodiment, the elastic member 5 is disposed in the first chamber 1b1, the elastic member 5 may be disposed between the piston 3 and the communication portion between the first chamber 1b1 and the outside, or between the wall of the first chamber 1b1 and the piston 3, the elastic member 5 is always in a compressed state, so that the elastic member 5 always keeps an extrusion force applied to the piston 3, when the outside moisture enters the first chamber 1b1, the outside moisture contacts and applies a pressure to the piston 3, the stress of the piston 3 is unbalanced, the elastic member 5 may drive the piston 3 to move in the direction of the second chamber 1b2, thereby compressing the space in the second chamber 1b2, causing the fluid in the second chamber 1b2 to flow into the fluid chamber a and contact with the inner side surface of the first seal 41, so that the pressure applied to the inner side surface of the first seal 41 resists the pressure of the immersed outside moisture on the outer side surface of the first seal 41, and the relative balance of the stress on the inner side surface and the outer side surface of the first seal 41 is achieved. The elastic piece 5 includes, but is not limited to, a spring and an elastic sleeve, wherein the elastic piece 5 can be made of metal, rubber, etc., and when the elastic piece 5 is made of metal, the outer periphery of the elastic piece can be wrapped with a waterproof material, so that the elastic piece 5 is prevented from being corroded by external moisture, and the service life of the elastic piece 5 is prolonged.
It should be noted that, because the pressure effect from the fluid actually applied to the inner side surface of the first seal 41 can be regarded as the equivalent force of three forces of the atmospheric pressure, the elastic force applied to the piston 3 by the elastic member 5, and the pressure of the external moisture to the piston 3, the pressure actually applied to the outer side surface of the first seal 41 is the equivalent force of two forces of the atmospheric pressure and the pressure of the external moisture, the pressure applied to the outer side surface of the first seal 41 is theoretically smaller than the pressure applied to the inner side surface of the first seal 41, that is, the fluid tends to push the first seal 41 to move to the outside. The advantage of the elastic member 5 provided in this embodiment is that by making the pressure on the inner side surface of the first sealing member 41 greater than the pressure on the outer side surface of the first sealing member 41, the outside moisture cannot enter the fluid chamber a and the installation chamber 7a by pressing the first sealing member 41, and reliable waterproof protection is performed on the wearable device. Meanwhile, when the user wears wearable devices such as a smart watch to perform swimming, diving and other movements, the water pressure received by the outer side surface of the first sealing piece 41 increases along with the increase of the water inlet depth, and the structural design of the embodiment is further beneficial to the water immersion of the wearable devices against stronger water pressure. In addition, through selecting the elastic component 5 of suitable elasticity, can make the pressure that first sealing member 41 inboard surface received slightly more than the pressure that first sealing member 41 outside surface received to make this button 2 waterproof construction can be applicable to daily waterproof and waterproof of swimming, water activities such as dive simultaneously.
In an embodiment of the present invention, as shown in fig. 4, a guiding groove 1c is provided on the inner wall of the first chamber 1b1, and the elastic member 5 is accommodated and limited in the guiding groove 1 c; and/or, the piston 3 is provided with a limit groove 3a, and part of the structure of the elastic piece 5 is accommodated and limited in the limit groove 3 a.
In this embodiment, the guiding groove 1c may extend along the moving direction of the piston 3, and the extending length of the guiding groove 1c may be less than or equal to the vertical height of the elastic member 5 in the non-immersed state of the key structure, so that the guiding groove 1c does not extend into the second chamber 1b2, and the first chamber 1b1 and the second chamber 1b2 are communicated through the guiding groove 1c, resulting in a failure of the sealing of the key structure. Simultaneously, also make elastic component 5 at least part hold all the time and spacing in guide slot 1c, retrain deformation scope and the direction of elastic component 5 through guide slot 1c, make elastic component 5 can steadily stretch out and draw back, apply directional driving force to piston 3, guarantee that piston 3 in time and steadily remove, guarantee the waterproof validity of this button structure.
The limiting groove 3a can accommodate and limit the end part of the elastic piece 5, so that when the elastic piece 5 drives the piston 3 to move, the piston 3 is prevented from swinging sideways relative to the elastic piece 5 through limiting fit of the elastic piece 5 and the groove wall of the limiting groove 3a, and the elastic piece 5 is prevented from swinging sideways relative to the piston 3, so that the stability of the piston 3 during movement is improved.
In one embodiment of the present invention, as shown in fig. 4, the second chamber 1b2 includes an expansion section 1b21 and a contraction section 1b22 that are communicated, the contraction section 1b22 is communicated with the fluid chamber a, and the piston 3 is located between the first chamber 1b1 and the expansion section 1b 21.
In this embodiment, the inner diameter of the expansion section 1b21 is larger than the inner diameter of the contraction section 1b22, the expansion section is provided for the movement and passage of the piston 3, and the contraction section 1b22 is provided for the fluid communication but does not allow the passage of the piston 3. By arranging the second chamber 1b2 to comprise the expansion section 1b21 and the contraction section 1b22 which are communicated with each other, the volume of the second chamber 1b2 is reduced, the filling amount of fluid is reduced under the condition of meeting the same waterproof requirement, and the material cost is reduced. At the same time, the space of the second chamber 1b2, which is communicated with the fluid chamber a, is narrowed by the constriction section 1b22, which is communicated with the fluid chamber a, so that the speed and the pressure of the fluid in the second chamber 1b2 flowing into the fluid chamber a are improved, the fluid can be pushed to flow into the fluid chamber a in time when the piston 3 moves, and the movement of the piston 3 is sensitive, so that the fluid can exert more concentrated pressure on the inner side surface of the first sealing piece 41.
In an embodiment of the present invention, as shown in fig. 4, the mounting sleeve 1 is provided with an injection hole 1d communicating with the second chamber 1b 2; the key structure further comprises a sealing plug 6, wherein the sealing plug 6 is inserted into the injection hole 1d and seals the injection hole 1d.
In the present embodiment, the injection hole 1d is used to inject the sealing fluid into the second chamber 1b2, and the injection hole 1d can communicate with the expansion section 1b21 of the second chamber 1b2, and the opening of the injection hole 1d can be facilitated because the expansion section 1b21 has a larger overall space than the contraction section 1b 22. The setting of injection hole 1d can make things convenient for the fluid to pour into and fill in second cavity 1b2, and in the fluid was poured into in the second cavity 1b2, makes injection hole 1d up and inverts installation cover 1, through pegging graft sealing plug 6 in injection hole 1d department, seals the second cavity, again with installation cover 1 assembly in the button hole 7b of shell 7 can realize the installation of fluid and installation cover 1 on shell 7.
In an embodiment of the present invention, as shown in fig. 4, the outer wall of the piston 3 and the inner wall of the pressure regulating cavity 1b enclose a sealing groove 3b; the key structure further comprises a third sealing piece 43 arranged in the sealing groove 3b, and the third sealing piece 43 is in butt joint with the outer wall of the piston 3 and the inner wall of the pressure regulating cavity 1 b.
In this embodiment, the seal groove 3b is an annular groove, and the seal groove 3b may be formed by forming a first groove body on the peripheral wall of the piston 3, so that the groove wall of the first groove body and the side wall of the pressure regulating cavity 1b enclose; or, a second groove body is formed on the side wall of the pressure regulating cavity 1b, and the groove wall of the second groove body is formed by encircling the outer peripheral wall of the piston 3; alternatively, the piston 3 is formed by forming a first groove on the peripheral wall of the piston 3, forming a second groove on the side wall of the pressure regulating chamber 1b, and enclosing the groove wall of the first groove and the groove wall of the second groove. The third seal 43 can be fixed and limited by the provision of the seal groove 3 b. The third sealing member 43 can reliably seal the second chamber 1b2, so that when the piston 3 moves towards the second chamber 1b2, the piston 3 can compress the space in the second chamber 1b2, the air pressure in the second chamber 1b2 is increased, the fluid is forced to flow into the fluid chamber a, and the inner side surface of the first sealing member 41 is pressed, so that the sealing effectiveness of the first sealing member 41 is ensured. The third sealing member 43 may be a rubber or silicone sealing ring.
In one embodiment of the present invention, as shown in FIG. 4, the second seal member 42 includes a sealing layer 421 and a first absorbent layer 422; the sealing layer 421 is located between the absorbing layer and the first sealing member 41, and encloses with the outer wall of the key 2 and the inner wall of the shaft hole 1a to form a fluid chamber a; the first absorbent layer 422 is used to absorb a portion of the fluid.
In this embodiment, the sealing layer 421 and the first absorbing layer 422 are sleeved on the outer periphery of the key 2 and are located between the outer wall of the key 2 and the inner peripheral wall of the shaft hole 1a, and the sealing layer 421 and the first absorbing layer 422 may be stacked or spaced. The sealing layer 421 is used for preventing fluid flowing into the fluid cavity a from entering the mounting cavity 7a, when the fluid in the fluid cavity a applies a larger pressure to the outer side surface of the sealing layer 421 and causes a small amount of fluid to pass between the sealing layer 421 and the inner wall of the shaft hole 1a, the small amount of fluid will be absorbed by the first absorbing layer 422 and will not flow into the mounting cavity 7a, so that the risk of the fluid entering the mounting cavity 7a can be avoided as far as possible by the blocking treatment of the sealing layer 421 to the fluid and the absorbing treatment of the first absorbing layer 422 to the fluid, and the sealing reliability of the key structure is ensured. The material of the sealing layer 421 may be rubber or silica gel. When the fluid is a gas, the first absorbing layer 422 may be a material having a microporous absorbing structure, such as an activated carbon layer, so as to absorb the gaseous fluid. When the fluid is a liquid, the first absorbent layer 422 may be made of a material having a microporous absorbent structure, such as wool, chemical fiber felt, etc., to absorb the liquid fluid.
In one embodiment of the present invention, as shown in FIG. 4, the second seal 42 further includes a second absorbent layer 423; the second absorbent layer 423 is located on a side of the first absorbent layer 422 facing away from the sealing layer 421, and the absorption rate of the second absorbent layer 423 for fluid is smaller than that of the first absorbent layer 422.
In this embodiment, the second absorbing layer 423 is sleeved on the outer peripheral wall of the key 2 and is located between the outer wall of the key 2 and the inner peripheral wall of the shaft hole 1a, and the second absorbing layer 423 may be stacked or spaced from the first absorbing layer 422. When a small amount of fluid breaks through the first seal and is not completely absorbed by the first absorbing layer 422, the second absorbing layer 423 will secondarily absorb the remaining unabsorbed fluid, further avoiding the fluid from entering the mounting cavity 7a, and ensuring the reliability of the seal of the key structure. In addition, because the absorptivity of the first absorbing layer 422 to the fluid is greater than that of the second absorbing layer 423, the fluid flowing to or absorbed by the second absorbing layer 423 will flow back to the first absorbing layer 422 to be absorbed again by the first absorbing layer 422, so that the fluid is further prevented from penetrating the second absorbing layer 423 to flow into the mounting cavity 7a, and the reliability of the sealing of the key structure is further improved. The absorption rate of the first absorption layer 422 and the second absorption layer 423 on the fluid includes a weight absorption rate and a volume absorption rate, wherein the weight absorption rate is a percentage of the weight of the fluid absorbed by the first absorption layer 422 and the second absorption layer 423 in the first absorption layer 422 and the second absorption layer 423 when the fluid absorption is saturated. The volume absorption rate means that the first and second absorption layers 422 and 423 are saturated in fluid absorption, and the volume of fluid absorbed inside the first and second absorption layers 422 and 423 accounts for a percentage of the natural volume of the first and second absorption layers 422 and 423. Since the fluid absorbed by the first and second absorption layers 422 and 423 is absorbed through the microporous pores of the internal structure, the greater the number of microporous pores in the material of the first and second absorption layers 422 and 423, the greater the absorption amount of the fluid, and the greater the absorption rate. Therefore, the first absorbing layer 422 and the second absorbing layer 423 may be made of materials with different densities of surface micropores, so that the first absorbing layer 422 and the second absorbing layer 423 exhibit different absorption effects on fluids. For example, when the fluid is insulating oil, the first and second absorbing layers 423 may be pure wool felt and chemical fiber felt, respectively.
It should be noted that, because of the presence of the sealing layer 421, the fluid is not easy to leak to the first absorbing layer 422 and the second absorbing layer 423, so that the fluid leaking to the first absorbing layer 422 and the second absorbing layer 423 is small, and the fluid absorbed by the first absorbing layer 422 or the second absorbing layer 423 is not saturated. In addition, the first and second absorbent layers 422, 423 may also increase the volume of the maximum absorbed fluid by increasing the volume and surface area.
The invention also proposes a wearable device including but not limited to a smart watch or smart bracelet.
In an embodiment of the present invention, as shown in fig. 1, 2 and 4, the wearable device includes a housing 7 and a key structure in the above embodiments, the housing 7 is provided with a mounting cavity 7a and a key hole 7b communicating with the mounting cavity 7 a; the installation sleeve 1 of the key structure is arranged in the installation cavity 7a, and part of the structure of the installation sleeve 1 is arranged in the key hole 7b in a penetrating way.
In this embodiment, the key hole 7b is used for installing the installation sleeve 1, and the installation sleeve 1 is at least partially accommodated and limited in the key hole 7b, and can be connected and fixed with the housing 7 by means of clamping, screwing, and the like. The installation sleeve 1 is provided with a shaft hole 1a along the axial direction, and the shaft hole 1a is communicated with an installation cavity 7a for installing a functional module of the wearable equipment in the shell 7. The key 2 passes through the shaft hole 1a of the installation sleeve 1 and can be detected by a sensor group in the installation cavity 7a when rotating or moving along the axial direction of the shaft hole 1a, and the wearable equipment can respond to the operation of the key 2 through a functional module electrically connected with the sensor group, so that the display, the loudspeaker and the like are further controlled to execute actions such as picture display, sounding and the like correspondingly by the execution terminal, and information interaction between the wearable equipment and a user is realized.
The specific structure of the waterproof key structure in this embodiment refers to the above embodiments, and since the wearable device adopts all the technical solutions of all the embodiments, at least the wearable device has all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.
In an embodiment of the present invention, as shown in fig. 1, 2 and 4, the housing 7 is provided with a liquid inlet 7c, and the liquid inlet 7c communicates with the outside and the first chamber 1b1 of the key structure; the key 2 comprises a key shaft 21 and a key cap 22, the key shaft 21 is movably arranged in the shaft hole 1a of the mounting sleeve 1 in a penetrating way, and the key cap 22 is connected with the key shaft 21 and is positioned at the outer side of the shell 7; the front projection of the key cap 22 on the housing 7 shields the liquid inlet 7c.
In this embodiment, the liquid inlet 7c is used for allowing external moisture to enter the first chamber 1b1, so that the moisture in the first chamber 1b1 applies pressure to the piston 3 in the first chamber 1b1, so that the piston 3 can press the fluid in the second chamber 1b2 into the fluid cavity a to press the first sealing member 41, the pressure from the external moisture on the outer side surface of the first sealing member 41 and the pressure from the fluid on the inner side surface of the first sealing member 41 are relatively balanced, and the sealing effectiveness of the first sealing member 41 is maintained. By arranging the liquid inlet 7c shielded by the key cap 22, on one hand, the problem that a large amount of water is instantaneously fed into the liquid inlet 7c can be avoided by shielding the liquid inlet 7c by the key cap 22; on the other hand, can realize the hidden design of feed liquor hole 7c, make feed liquor hole 7c not directly show outward, be favorable to promoting the aesthetic property of this wearable equipment outward appearance.
In an embodiment of the invention, as shown in the figures and in the figures, the wearable device further comprises a first sensor 8 and a second sensor 9 arranged inside the mounting cavity 7 a; the first sensor 8 is located in the axial direction of the key 2 and is used for detecting the axial movement of the key 2; the second sensor 9 is provided at one side of the key 2 and is used for detecting the rotation of the key 2.
In this embodiment, the wearable device has a sensing function when the key 2 is pressed and a sensing function when the key 2 is rotated, wherein the key 2 pressing sensing function is realized by the first sensor 8 and the key 2 rotation sensing function is realized by the second sensor 9. Specifically, when the key 2 is axially moved by a pressing force, the key 2 moves close to the first sensor 8, and the key 2 can contact and press the elastic contact piece on the sensor, so that the first sensor 8 detects the pressing action of the key 2. When the pressing force on the key 2 is removed, the elastic contact piece is elastically restored and pushes the key 2 to reset. When the key 2 rotates, different parts of the peripheral wall of the key 2 pass through the second sensor 9, and the second sensor 9 detects the change of the light reflected by the key 2 so as to sense the rotation of the key 2. The first sensor 8 and the second sensor 9 are arranged, so that the wearable device can timely and accurately sense the action of the key 2, and further timely and accurately respond to the operation of the key 2 according to a user. Wherein the first sensor 8 may be a contact sensor and the second sensor 9 may be a photoelectric sensor, a grating sensor, etc.
The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all the equivalent structural changes made by the description of the present invention and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the invention.
Claims (10)
1. A key structure applied to a wearable device, the wearable device being provided with a key hole, characterized in that the key structure comprises:
the mounting sleeve part is penetrated in the key hole and is provided with a shaft hole and a pressure regulating cavity;
the key is movably arranged in the shaft hole in a penetrating way;
the piston is movably arranged in the pressure regulating cavity and divides the pressure regulating cavity into a first cavity communicated with the outside and a second cavity communicated with the shaft hole, and the second cavity is filled with fluid; when the piston moves in the pressure regulating cavity, the space of one of the first cavity and the second cavity is contracted, and the space of the other of the first cavity and the second cavity is expanded; and
The sealing assembly comprises a first sealing element and a second sealing element which are sleeved on the key at intervals, and the first sealing element and the second sealing element are enclosed with the inner wall of the shaft hole and the outer wall of the key to form a fluid cavity communicated with the second cavity.
2. The key structure of claim 1, further comprising an elastic member;
the elastic piece is arranged in the first cavity and is abutted with the piston; the elastic member is in a compressed state to drive the piston to compress the space of the second chamber.
3. The key structure according to claim 2, wherein the inner wall of the first chamber is provided with a guide groove, and the elastic member is accommodated and limited in the guide groove;
and/or one side of the piston, which is away from the second chamber, is provided with a limiting groove, and part of the structure of the elastic piece is accommodated in and limited in the limiting groove.
4. The key structure of claim 1 wherein said second chamber includes an expanding section and a contracting section in communication, said contracting section in communication with said fluid chamber, said piston being located between said first chamber and said expanding section.
5. The key structure of claim 1, wherein the mounting sleeve is provided with an injection hole communicating with the second chamber;
the key structure further comprises a sealing plug, wherein the sealing plug is inserted into the injection hole and seals the injection hole.
6. The key structure of claim 1, wherein the outer wall of the piston and the inner wall of the pressure regulating cavity enclose a seal groove;
the sealing assembly further comprises a third sealing piece arranged in the sealing groove, and the third sealing piece is in butt joint with the outer wall of the piston and the inner wall of the pressure regulating cavity.
7. The key structure according to any one of claims 1 to 6, wherein the second sealing member includes a sealing layer and a first absorbing layer;
the sealing layer is positioned between the absorption layer and the first sealing piece and is enclosed with the outer wall of the key and the inner wall of the shaft hole to form the fluid cavity; the first absorbent layer is configured to absorb a portion of the fluid.
8. The key structure of claim 7 wherein said second seal further comprises a second absorbent layer;
the second absorption layer is positioned on one side of the first absorption layer, which is away from the sealing layer, and the absorption rate of the second absorption layer to the fluid is smaller than that of the first absorption layer to the fluid.
9. A wearable device, the wearable device comprising:
the shell is provided with an installation cavity and a key hole communicated with the installation cavity; and
the key structure according to any one of claims 1 to 8, wherein a mounting sleeve of the key structure is arranged in the mounting cavity, and a part of the mounting sleeve is arranged in the key hole in a penetrating manner.
10. The wearable device of claim 9, wherein the housing is provided with a liquid inlet hole, the liquid inlet hole communicating an outside and the first chamber of the key structure;
the key comprises a key shaft and a key cap, the key shaft is movably arranged in the shaft hole of the mounting sleeve in a penetrating mode, and the key cap is connected with the key shaft and is positioned on the outer side of the shell; the orthographic projection of the keycap on the shell shields the liquid inlet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111530657.5A CN114220686B (en) | 2021-12-14 | 2021-12-14 | Key structure and wearable equipment |
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|---|---|---|---|
| CN202111530657.5A CN114220686B (en) | 2021-12-14 | 2021-12-14 | Key structure and wearable equipment |
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| CN114220686A CN114220686A (en) | 2022-03-22 |
| CN114220686B true CN114220686B (en) | 2023-11-17 |
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| CN114220686A (en) | 2022-03-22 |
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Effective date of registration: 20230404 Address after: 18th Floor, Building 2, Shandong Private Science and Technology Building (Minghui International), No. 39 Shiling Road, Laoshan District, Qingdao City, Shandong Province, 266100 (centralized office area) Applicant after: Qingdao Suiyun Electronic Technology Co.,Ltd. Address before: 266104 Room 308, North Investment Street Service Center, Laoshan District, Qingdao, Shandong. Applicant before: GOERTEK TECHNOLOGY Co.,Ltd. |
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